<!DOCTYPE html>
<html xmlns:layout="http://www.ultraq.net.nz/web/thymeleaf/layout"
      layout:decorate="~{layout}">
<head>
    <title>页面不存在</title>
</head>
<body>
<div layout:fragment="content" id="app">
    <div class="site-text">
        <h1 class="site-h1">404 Not Found</h1>
    </div>
</div>
</body>
</html>